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2.
Lift the cover plate (
A
) of the upper casing vertically and remove it (s. fig. below).
3.
The lever (
B
) to extend the castors mechanically is at the bottom of the now open
casing (s. fig. below).
4.
Pull the lever (
B
) towards you to extend the castors. Thereby, you have to
overcome a resistant point.
5.
The castors are now extended.